Update third_party/silabs/efr32_sdk.gni

Co-authored-by: mkardous-silabs <84793247+mkardous-silabs@users.noreply.github.com>

Author: chirag-silabs

third_party/silabs/efr32_sdk.gni

@@ -87,6 +87,7 @@ declare_args() {
 examples_plat_dir = "${chip_root}/examples/platform/silabs/efr32"
 silabs_plat_efr32_wifi_dir = "${chip_root}/src/platform/silabs/efr32/wifi"
 silabs_common_plat_dir = "${chip_root}/examples/platform/silabs"
+
 is_series_2 = silabs_family == "mgm24" || silabs_family == "efr32mg24" ||
               silabs_family == "efr32mg26"